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<?php $obj = new stdClass; $dex = (int) "123"; echo is_int($dex),"\n"; $obj->$dex = "foo"; var_dump($obj); $arr = (array) $obj; var_dump($arr);
based on iONfY
Output for 5.0.0 - 7.1.0
1 object(stdClass)#1 (1) { ["123"]=> string(3) "foo" } array(1) { ["123"]=> string(3) "foo" }
Output for 4.3.0 - 4.4.9
1 object(stdClass)(1) { [123]=> string(3) "foo" } array(1) { [123]=> string(3) "foo" }